Studies on the mineral nutrition of the rice plant: XIX. Uptake of macronutrients by varieties IAC-164 and IAC-165 during the life cycle

Authors

  • E. Malavolta USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • A. Parada USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • G. Martins USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • J.C. Gonçalves USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • J.F. Centurion USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • L.A.B.C. Vasconcellos USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • M. Almeida USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • M.E. Marchetti USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • O.A.P. Pereira USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • P.F.S. Martins USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • S. Buzetti USP; E.S.A. Luiz de Queiroz; Departamento de Química
  • C.P. Cabral USP

DOI:

https://doi.org/10.1590/S0071-12761982000200015

Abstract

Dry matter production and accumulation of macronutrients were studied by growing plants in nutrient solution and taking samples at given physiological intervals. It was found that curves describing dry matter production and uptake were sigmoidal in tendency. Maximum rate of uptake was observed within a 2-month period starting at full tillering and ending at the stage of panicle formation. Leaf levels of N, P, and K decrease as the plant grows older; the opposite is true in the case of the other elements.

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Published

1982-01-01

Issue

Vol. 39 No. 2 (1982)

Section

nao definida

How to Cite

Malavolta, E., Parada, A., Martins, G., Gonçalves, J., Centurion, J., Vasconcellos, L., Almeida, M., Marchetti, M., Pereira, O., Martins, P., Buzetti, S., & Cabral, C. (1982). Studies on the mineral nutrition of the rice plant: XIX. Uptake of macronutrients by varieties IAC-164 and IAC-165 during the life cycle . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 39(2), 851-866. https://doi.org/10.1590/S0071-12761982000200015